"American Horror Story's" first season is coming to an end Wednesday night (Dec. 21) and based on this preview, it looks to be an explosive finale. The baby appears to be being fought over by no less than Vivien, Nora and Hayden, though we wouldn't be surprised if Moira and Constance get in on that action too.It's nice to see Tate hasn't disappeared forever, but we don't really like him screaming at Violet. And what do you think the "terrifying truth" is that is going to be revealed? What is left to reveal?We'd have to think the promo means "terrifying" for the viewers? We certainly hope so. "American Horror Story" airs Wednesday nights at 10 p.m. ET/PT on FX....